Presidente Sarney weather in September

In September, Presidente Sarney sees average daytime highs of 32°C and overnight lows near 24°C, with 18 mm of rain across 5.1 wet days and about 12 hours of daylight. It is the 4th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Presidente Sarney's 1st-clearest and 2nd-windiest month. For the whole year in context, see Presidente Sarney's year-round climate.

Daytime high
32°
4th warmest
Overnight low
24°
8th coldest
Rainfall
18 mm
5.1 wet days
Daylight
12 hours
5:56 AM – 5:55 PM
Cloud cover
40%
1st clearest
Wind
12 km/h
2nd windiest
Solar energy
5.88 kWh/m²
Travel score
4.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Presidente Sarney reaches about 32°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324

How September really feels in Presidente Sarney

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Presidente Sarney weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 24°19824.112.12.8
Feb31° / 24°26225.912.12.6
Mar30° / 24°36329.9122.6
Apr30° / 24°3542911.92.6
May31° / 24°24426.211.92.9
Jun30° / 23°11720.811.93.6
Jul30° / 23°781711.94.2
Aug31° / 23°3310.211.94.5
Sep32° / 24°185.1124.4
Oct33° / 24°194.912.14.0
Nov33° / 24°306.112.13.8
Dec33° / 24°7313.412.13.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 30% of September, with mostly cloudy or overcast conditions the remaining 11%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
19010
2919
3919
4919
5919
6919
7919
8919
9919
10919
11919
12919
139010
148911
158911
168911
178911
188812
198812
208812
218713
228713
238713
248713
258713
268713
278713
288713
298614
308614

Chance of precipitation in September

Any precipitation

Presidente Sarney gets around 18 mm of rain over 5.1 wet days in September, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 27% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
127
227
326
425
524
623
722
821
920
1019
1119
1218
1318
1417
1517
1617
1716
1816
1916
2015
2115
2214
2314
2414
2513
2613
2713
2812
2912
3012

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11972
21972
31972
41972
51981
62971
72971
82971
92971
102971
112971
122971
133961
143961
153961
163961
173970
183970
193970
203970
214960
224960
234960
244960
254960
264960
275950
285950
295950
305950

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over September. Sunrise moves from 6:03 AM to 5:50 AM, and sunset from 6:00 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:036:00
212.06:025:59
312.06:025:59
412.06:015:59
512.06:015:59
612.06:015:58
712.06:005:58
812.06:005:58
912.05:595:57
1012.05:595:57
1112.05:585:57
1212.05:585:57
1312.05:585:56
1412.05:575:56
1512.05:575:56
1612.05:565:55
1712.05:565:55
1812.05:555:55
1912.05:555:54
2012.05:545:54
2112.05:545:54
2212.05:545:54
2312.05:535:53
2412.05:535:53
2512.05:525:53
2612.05:525:52
2712.05:515:52
2812.05:515:52
2912.05:515:52
3012.05:505:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 4.05 kWh/m² to a high of 6.03 kWh/m² in October across the year — September's 5.88 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
225.9Bright
236.0Bright
246.0Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.0Intense
306.0Intense
Planning a trip in September

Hazard calendar for Presidente Sarney

In seasonPeak

None of Presidente Sarney's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Presidente Sarney's monsoon runs January–May, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Presidente Sarney?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.4
Sightseeing
2nd-best month of the year
7.3
Beach & pool
1st-best month of the year

September is a reasonable time to visit Presidente Sarney for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Presidente Sarney in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Presidente Sarney sees daytime highs around 32°C and nights near 24°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Presidente Sarney in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Presidente Sarney peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jul 15UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Very high
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Presidente Sarney in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Presidente Sarney is worst in February — around 18 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (July, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateFeb 2018 µg/m³Jul 137 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb18Moderate
Mar17Moderate
Apr13Moderate
May9Good
Jun8Good
Jul7Good
Aug8Good
Sep9Good
Oct10Good
Nov11Good
Dec13Moderate
Location & terrain

Where is Presidente Sarney?

Presidente Sarney sits at 2.6°S, 45.4°W, 31 m above sea level, in Brazil. The nearest listed city is Pinheiro, 32 km away.

Topography around Presidente Sarney

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Presidente Sarney.

Within 3 km, the terrain around Presidente Sarney has only modest variations in elevation — a maximum elevation change of 80 m around an average of 33 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 168 m; within 80 km, only modest variations in elevation — a maximum elevation change of 169 m.

The land around Presidente Sarney is covered by trees (49%) and grassland (48%) within 3 km, trees (72%) and grassland (27%) within 16 km, and trees (51%) and grassland (41%) within 80 km.

3 km
80 m
16 km
168 m
80 km
169 m
treesgrasslandartificial surfaceswaterwetlandmangroves
September weather nearby: Pinheiro 32 km · Santa Helena 41 km · Turilândia 42 km · Pedro do Rosário 42 km · Santa Luzia do Paruá 46 km · Palmeirândia 52 km · São Bento 61 km · São Vicente Ferrer 63 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Presidente Sarney (-2.5914°, -45.3642°, elevation 31 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).